Sharpening device for razors.



A. DE VIVO.

SHARPENING DEVICE FOR RAZORS.

APPLIOATION FILED JULY 25. 1910.

Patented Nov. 29, 1910.

o Witnesses; Q Inventor:

flnello 1J6 W00, b Au; areal-1w ANIELLO DE VIVO, OF BAYONNE, NEW JERSEY.

SHARPENING DEVICE FOR RAZOIRS.

Specification of Letters Patent.

Patented Nov. 29, 1910.

Application filed July 25, 1910. Serial No. 573,744.

To all whom it may concern:

Be it known that I, ANIELLO DE VIVO, a

. subject of the King of Italy, residing in razor blade that is to be Bayonne, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in SharpeningDevices for Razors, of which the following is a specification.

1. This invention has .for its object to. produce a. very-simple and compact form of a razor grindingdevice to be operated by a spring motor and automatically grind the blade of a razor uniformly and evenly throughout its length; at the same time to work automatically by merely clamping the blade in the so A further ect is to provide means for adjusting the stroke of reciprocation of the blade, and also toprovide means for controlling the speed of the grindingwheel or quickly arresting its motion.

- In the accompanying drawing representing an-embodiment of my invention, Figure Fig. 2 is an end view. 'Fig. 3 is a plan. Fig. 4 is a view of the clamp, and Fig. 5 shows a ground.

As indicated in Fig. 5, the razor blade 6 is shown as having its slightly concave side faces a and b that by repeated honing at the edge ortio'n havefldditional curve faces '0 and This willa'give at the portion of the blade where such grinding has taken place,

1a form of edge that is entirely too thick, and

will not properly flex as is required in the proper' use of a razor.

The object of-this invention is to produce 1 a concave sidesurface that is a continuous curve from he edge to the heel of the blade, as indicated inside of the sectional portion of this figure.

The device is shown as comprising a frame denoted generally by 7 in which is mounted a spring motor'8 pivoted between side members'9 and 10. The handle 11 is shown 'for winding up the motor, that is engaged by the usual'pawl and ratchet 12 and 13. At the other .end of the frame is mounted a small grinding wheel 14 on a shaft 15, pivotally supported in a bearing portion 16 of a frame. It will be seen that he grinding wheel has its axis at right. angles to that of the spring motor shaft 17. Suitable gearing is mounted between the spring motor and the grinding wheel to transmit the mo tion at a much increased speed for the port and winding the spring.

grinding wheel. The shaft 16 'of the grinding wheel is shown provided with a bevel gear 18 meshiin with a gear 19 on a shaft 20 parallel with tie shaft of the spring motor. The shaft 20 carries a pinion 21 meshing witha gear 22 on a shaft 23; and the latter shaft carries a pinion 24: meshing with a gear 25 fast on the shaft 17 of the spring. motor. By: this means it will be seen that the grinding wheel will make a'large number of revolutions to one of the spring motor. To control the speed of the grinding wheel, and arrest it when desired, a suitable controlling device is provided, shown in the form of a friction brake. This is illustrated ascomprising a brake lever 26 pivoted at 27 on the frame, and engaging a, brake wheel 28 on the shaft 15 of the grinding wheel.

An upright 29 of the frame has a threaded bore-in which turns a screw 30 whose lower end is connected 'to the brake arm 26, by which means the brake arm can be pressed against the brake wheel with a force that can be very finely adjusted.

A carriage 31 is mounted to reciprocate on the bottom member of the frame by means of dovetailed guides-32, which carriage slides parallel with the axis of the rinding wheel. The carriage is automatical yreciprocated from one of the gearing members, and an .arm 33 is shown secured on the shaft 23 and has a slot 34. A connecting rod 35 is pivoted to the carriage at 36 and by means of a bolt 37 is adj ustably pivoted in the slotted crank arm 33. By this means the stroke or path of reciprocation of the carriage is varied as desired. The carriage will have an evenly timed reciprocation from the earingmember. The carriage supports a 0 amp for the razor blade shown separate in Fig. 4 as comprising a channel shaped portion 40 having the sides converging to en age the heel of the razor blade that is,slid therein and clamped by screws 41. One of the channel port-ions is extended at 42 to engage practically the entire face of the razor blade that is not engaged by the grinding wheel as shown in Figs. 1 and 2. This clamp is preferably adjustably mounted on the carriage and a carriage 43 is shown having its clovetail ed channeled lower face slidable' on a dove-tailed top portion 44.0f the carriage, and secured in adjusted positions by screw 45. On this carrier is a bracket iii-containing apertures, and the holder has an apertured bracket 47 connecting with the hinge universally adjustable relative to the grind-- bracket and a clamp screw 48 passes throu h these two members, whereby the blade hol er is mounted to swing on an axis on the holder, parallel with the axis of the grinding wheel, and readily located in adjusted positions. By this means the razor blade is practically ing wheel and any desired curvature can be given to the blade by these two adjustments.

A small cu' or receptacle 50 is shown below the grinding wheel and a roller 51 is pivoted therein to project above the level of water or other liquid 1n the cup, and to engage the bottom of the grinding wheel. By this means the grinding wheel can be supplied with water or oil if desired and kept moistened to prevent undue heating of t e blade.

It will be seen that this device is very compact and can be easily transported or put in the pocket and carried around. To

- grind a razor. it is only necessary to wind up the spring with the handle, adjust the blade in the holder and then start the device by releasing the friction brake. The grinding wheel willberotated and the blade will be evenly and uniformly reciprocated across the face of the grinding wheel whereby a fine cut will behad on its edge. The speed can be readily -controlled by the brake and stopped when desired' The device is en:

tirely automatic and once'started will continue to operate until the spring runs down,

one winding being found practically sufli-. cicnt for one blade.

It is sometimes desired to replace the grinding wheel 14 by a polishing wheel that should run in the opposite direction in order to cause reversal. The bevel gear 19 meshing with the bevel pinion 18 is mounted on a sleeve 51 sliding on the shaft 20 and secured thereon in adjusted positions by screw 53. This sleeve also carries a .bevel gear 52 that when the sleeve is shifted will be brought into mesh with the bevel wheel 18, at the same time the bevel wheel 19 will disengage. Obviously the rotation of the shaft 20 in the same-direction will cause a reverse movement to be given to the shaft 15 by shifting these two bevel gears into and out of engagement, and they can be locked by the screw in the desired position.

It will also be observed that the screws 41 in the holder 40 can be adjusted to shift the ing means between the motor and the grinding wheel, a carriage, means for reciproeating the carriage from the motor, a guideway-on the frame on which the carriage is movable in a plane parallel with theaxis of the grinding wheel, a clamp member ar-- ranged to engage a razor blade and to support it on the side opposite to the face being ground, said clamp being adjustably car-- ried on the'said carriage, the'clamp being adjustable on the carriage toward and from the axis of the grinding wheel, and also adjustable to swing on an axis parallel with the axis of the grinding wheel. I

2. In a rind a: for razors, the combination of a rame, a motor on the frame, a grinding wheel r-tatable on the frame, driving means between the motor and the grinding wheel, a carriage, means for reciproeating the carriage from the motor, a guideway on the frame on which the'carriage-is movablein a plane of the grinding whee adjustable clamping means for a razor blade on the carriage c mprising a frame having a U-shape c amping portion to engage the back of the arallel with' the axis' blade and an extension to, engage-one, side ing means between the motor and the grinding wheel, a carriage, means for reciprocating the carriage from the motor, a guideway on the frame on which the carriage is movable in a plane parallel with the axis of the grinding wheel, comprising a frame having a U-shaped clam ing ortion to engage the back of the bla e an an extension to engage one side of the blade, and screws m the U-shaped portion to engage the blade;

and position it in' the 1101 cr, means for shifting the holder on the carriage toward and from the grinding wheel, and means for swinging the holder on an axis parallel to the axis of the grinding wheel and for clamping it in adjusted positions.

- 4. In a'deviee of the character described, the combination of a rinding wheel, means for rotating the grin ing wheel, a carriage,

and means for reciprocating the carriage,. of a blade holdef comprising a channel shaped portion to engage the back of the blade and havin an extension to enga e andcover one si e face of a blade, an a j usting screw in said extension, and adjusting screws in the channel portions to shift 5. In a rinder for razors, the combine the blade in the holder.

tion of a ame, a motor on the frame, a grinding-wheel rotatable on the frame, drivmg means between the motor and the grinding wheel, a carriage, means for reciprolflC razor clamp adapted to clamp a razor blade and support the face of the blade opposite to the one being ground on the Wheel, said clamp being pivotally supported on the carrier to swing on an axis parallel with the 15 axis of the grinding wheel.

' ANIELLO DE VIVO, Vitnesses H. D. PENNEY, FRED. J. DOLE. 

